7 papers · 1 filter
Mass/Light Variations with Environment
R. Brent Tully
In the local part of the universe, a majority of the total mass is in only a small number of groups with short dynamical times. The Virgo Cluster dominates far out of proportion to…
Faint End of the Galaxy Luminosity Function: A Chronometer for Structure Formation?
R. Brent Tully
There is accumulating evidence that the faint end of the galaxy luminosity function might be very different in different locations. The luminosity function might be sharply rising…
Conference Summary: Mapping the Hidden Universe
R. Brent Tully
Two curiously connected topics provided a novel focus for this meeting in Guanajuato, Mexico, 22--29, February, 2000. Two days were devoted to discussions of galaxy surveys deep in…
Antibiasing: High Mass-to-Light Ratios in Dense Clusters
R. Brent Tully, Edward J. Shaya
Modeling of the velocity field of the Local Supercluster leads to the conclusion that there must be a substantial differential between the mass-to-light ratios of most galaxies and…
Recalibration of Luminosity-HI Linewidth Relations and H_0
R. Brent Tully
A recalibration of the luminosity-linewidth technique is discussed which introduces (i) new cluster calibration data, (ii) new corrections for reddening as a function of inclinatio…
The Cosmological Parameters H_0 and Omega_0
R. Brent Tully
The first section discusses a recalibration of the luminosity-linewidth technique and its use in a determination of H_0. The recalibration introduces (i) new cluster calibration da…